Kırklareli Baraj Gölü’nde (Kırklareli/Türkiye) İstilacı Cercopagis pengoi (Ostroumov, 1891) 'nin Mevsimsel Dağılımı Üzerine Bir Araştırma

Year 2023, Volume: 8 Issue: 1, 117 - 123, 31.03.2023

Hüseyin Güher

https://doi.org/10.35229/jaes.1192665

Abstract

Öz: Cercopagis pengoi (Ostroumov, 1891) Karadeniz ve Hazar Denizi'nin acı kıyılarında yaşayan ve bu bölgenin yerlisi olan planktonik Cladocera türüdür. Son yıllarda istilacı bir tür olarak Doğu Avrupa'nın bazı akarsularına, rezervuarlarına, Kuzey Amerika göllerine ve Baltık Denizi'ne yayılmıştır. Cercopagis pengoi yırtıcı ve yayılmacı bir Cladocera’dır ve bu nedenle dünyanın en kötü 100 istilacı türü arasında sınıflandırılmaktadır. Kırklareli Baraj Gölü'nde yapılan bu çalışmada ilk kez tespit edilmiştir. Kırklareli Barajı, Şeytandere Çayı üzerinde sulama ve taşkın kontrolü amacıyla 1985-1995 yılları arasında inşa edilmiştir. Rezervuar, Kırklareli ili için içme ve kullanma tatlı su kaynakları sağlamakta ve Kırklareli il merkezinin 7 km kuzeydoğusunda (41°44'08.6"K ve 27°16'59.0"D) yer almaktadır. Bu çalışma, Kırklareli Baraj Gölü'ndeki Cercopagis pengoi'nin bolluğunu ve mevsimsel dağılımını belirlemek amacıyla yapılmıştır. Mayıs 2018'den Nisan 2019 arasında aylık olarak rezervuarda belirlenen üç istasyonda Cercopagis pengoi örnekleri toplanmış ve bazı su kalite parametreleri ölçülmüştür. Cercopagis pengoi, çalışma sırasında Ağustos (444 birey/m3) ve Eylül (529 birey/m3) aylarında bulunurken, diğer aylarda bulunamamıştır. Aynı şekilde 1. ve 2. istasyonlarda bulunurken 3. istasyonda da tespit edilememiştir. Türün yoğunluğu sıcaklığa bağlı olarak büyük ölçüde değiştiği görülmektedir. Maksimum organizma sayısı sonbahar mevsiminde bulunmuştur (529 birey/m3). Elde edilen örneklerin nicel değerlendirmesi sonucunda rezervuarda ortalama 88 birey/m³ Cercopagis pengoi bulunduğu tespit edilmiştir.

Keywords

Kırklareli Rezervuarı, Cercopagis pengoi, istilacı, Cladocera

Supporting Institution

Yok

Thanks

Bu çalışma 20-23 Ekim 2022 Tekirdağ’da düzenlenen Uluslararası Uygulamalı Bilimler, Mühendislik ve Matematik Kongresine gönderilmiş, kabul edilmiş ancak sunulmamıştır.

A Study on Spatial and Seasonal Densities of the Invasive Species Cercopagis pengoi (Ostroumov, 1891) in the Kırklareli Reservoir (Kırklareli/Turkey)

Abstract

Cercopagis pengoi (Ostroumov, 1891) is a species of planktonic cladoceran crustaceans that is native in the brackish fringes of the Black Sea and the Caspian Sea. In recent decades it has spread as an invasive species to some freshwater waterways and reservoirs of Eastern Europe and to the brackish Baltic Sea. Cercopagis pengoi is a predatory cladoceran and thus has become a pest classified among the 100 worst invasive species of the world. It was detected for the first time in this study carried out in Kırklareli Reservoir. Kırklareli Reservoir was built between the years 1985 and 1995 for irrigation and flood control on Şeytandere Stream. The reservoir provides drinking and using freshwater supplies for Kırklareli province. It is located 7 km to the northeast of Kırklareli city center (41°44'08.6"N and 27°16'59.0"E). This study was carried out to determine the abundance and seasonal distribution of Cercopagis pengoi in Kırklareli Reservoir. Cercopagis pengoi samples were collected from May 2018 to April 2019 at three stations in the reservoir and some water quality parameters were measured. While Cercopagis pengoi was found in August (444 ind/m3) and September (529 ind/m3) during the study, it was not found in other months. Likewise, while it was found at 1st and 2nd stations, it could not be found at the 3rd station. The density of the species appears to vary greatly depending on temperature. The maximum organism number was found in the autumn season (529 ind/m3). The quantitative evaluation of the samples showed that 88 ind/m³ Cercopagis pengoi on average was found in the reservoir.

Keywords

Kırklareli Reservoir, Cercopagis pengoi, invasive, Cladocera

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